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SKIN TEMPERATURE DECREASES DURING MAXIMAL RUNNING IN COMPENSABLE ENVIRONMENTS

Abstract

T.W. Squires, K.R. Cochrane, J.S. Cuddy, B.C. Ruby

University Of Montana, Missoula, MT

PURPOSE: Identify possible relationships between skin temperature, heart rate and core temperature during increases in interval running intensity. Specifically, the relationship between skin temperature and increased running speed was examined. METHODS: Study participants included 7 males and 3 females (22.9 ± 2.5 years, 177.9 ± 9.0 cm, 79.7 ± 13.9 kg, 25.1 ± 3.0 body mass index, 13.3 ± 5.8 % body fat, and 53.3 ± 8.3 VO2 ml/kg/min). Subjects completed a 75 minute trial, alternating between 10 minute run intervals (60, 70, 80, 90, and 100% of age-predicted heart rate max) and 5 minutes of walking between each interval. The trials were conducted on an outdoor 440 yard track with ambient temperatures ranging between 13-30°C. Heart rate, skin temperature, and rectal temperatures were monitored throughout the trials using wireless units. RESULTS: Skin temperature was lower during the 100% stage compared to the 60, 70, 80, and 90% stages, main effect of time (32.8 ± 2.5 vs. 34.7 ± 1.5, 34.7 ± 1.6, 34.9 ± 1.3, 34.4 ± 1.5°C, respectively, p

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